1991 USAMO

Revision as of 11:11, 13 January 2008 by Boy Soprano II (talk | contribs)

The 20th USAMO occurred April 23, 1991. There were five problems, and the time limit was three and a half hours.

Resources

1991 USAMO (ProblemsResources)
Preceded by
1990 USAMO
Followed by
1992 USAMO
1 2 3 4 5
All USAMO Problems and Solutions
Invalid username
Login to AoPS